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Good quality, the manual help me to repair the echo/reverb section
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A good service manual with lots of info and a very fair price
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Great value, good scan, just as expected, everything that you need.
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Good scan, great price, but almost the same with the SV260 service manual.
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This PDF is very comprehensive. It includes drawings, parts lists, schematics, pictures, PCB drawings, mechanical layouts, etc. for all three stackable equipment. The scans are good too. Easy to read and no smudges or black lines. I have no complaints. I will make this site my first stop for finding my service manuals.
Reference 1220w 12" Woofer � Technical Data
CAR AUDIO
SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS: 12" (304.8 MM) 92 dB 300 WRMS 20 ~ 800 HZ 4 OHMS 2.0" (50.0 MM)
SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)
Reference 1220w
(side view)
mounting depth 6.125" (155.58 mm)
VBOX = 1.25 ft3 (35.40 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
cutout diameter 11.125" (282.58 mm) outer diameter 12.25" (311.15 mm)
SEALED FREQUENCY RESPONSE @ 2.83 V
100 dB In-Car 12 dB LP @ 80 Hz 95
THIELE-SMALL PARAMETERS
VOICE COIL DC RESISTANCE: R
EVC
90 85
Out-Of-Car
(OHMS) . . . . . . 3.43
VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (MH) . . . . . . . 1.16 DRIVER RADIATING AREA: S D (IN 2) . . . . . . . . 82.15 S D (M2) . . . . . . . 530.00 MOTOR FORCE FACTOR: COMPLIANCE VOLUME: SUSPENSION COMPLIANCE: MOVING MASS, AIR LOAD: MOVING MASS, DIAPHRAGM: FREE-AIR RESONANCE: MECHANICAL Q: ELECTRICAL Q: TOTAL Q: MAGNETIC-GAP HEIGHT: VOICE-COIL HEIGHT: MAXIMUM EXCURSION: BL (TM) . . . . . . . . 10.86 VAS (FT3) . . . . . . . . 4.55 VAS (LITERS) . . . . 128.80 C MS (µM/N) . . . . 320.47 MMS (GRAMS). . . . 137.20 MMD (GRAMS) . . . 130.14 FS (HZ) . . . . . . . . 24.00 Q MS . . . . . . . . . . . 8.21 Q ES . . . . . . . . . . . . 0.60 Q TS . . . . . . . . . . . . 0.56 HAG (IN) . . . . . . . . . 0.31 HAG (MM) . . . . . . . . 7.92 H (IN) . . . . . . . . . 1.25
VC
80 75 70
65
C
60 20 Frequency 50 100 Hz 200 500 1k
2k
SEALED EXCURSION/GROUP DELAY @ 250 W
20.0 Xd mM 17.5 15.0 T mSec 20 15 10
12.5
Group Delay
5
10.0
0
7.5 5.0 2.5 0.0 20 Frequency 50 100 Hz 200 500 1k Transducer Excursion
C
-5 -10 -15 -20
HVC (MM) . . . . . . . 31.75 X MAX (IN) . . . . . . . . 0.47 X MAX (MM) . . . . . . 11.91
2k
Harman Consumer Group � 250 Crossways Park Drive � Woodbury, NY 11797 � VOICE: 516-496-3400 � FAX: 516-496-4868 � www.infinitysystems.com
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